I have also added line items for common area monetering and additional appliances.

If you can hold on till first part of January the showings and everything else should pickup.This would be my action items: 1. hire a new agent that can sell the place, and get you numbers are rent and selling and sell the place. 2. be honest on the numbers you can get on an ARV so that you can sell it 3. start to get the conversation started with a couple lenders on what these numbers on refi would look like for you and this property 4. my suggestion would be to refi/rent before selling at a loss because if numbers work you can hold for a couple years then sell, but this is dependent on your cash position and liquidity of your situation. 

You need to make sure that your property is easily financeable if you decide to sell it in the future and any future buyer can call out non-permitted items and actually report you to the building department or, at a minimum, ask for seller concessions.

I think the above are the type of items your engineer wants you to look at.  

Costs ran significantly over on both of these items and not being in the area it was not possible for me to add my experience in renovations to lowering them. 

Have a warehouse currently for a business I do(I order pallets of items and resell) but getting tight on space.

Those two items will vary quite a bit depending on the house.

I'd recommend the spread on the return and your ability to replace damaged items (local vs. not local, strength of your team) be the determining factors in that decision.

I plan for a time when they can be there and check in and make sure there aren't any maintenance items they haven't told me about.

Due to item 1, adding an ADU can require years to start achieving any return (once the accumulated cash flow recovers the initial negative position).4) Adding an ADU is a slow process.